Modulator design and architecture for multiple wireless applications

Author

Wyskiel, David ; Feher, Kamilo

Author_Institution

Digital Link Corp., Sunnyvale, CA, USA

Volume

2

fYear

1997

fDate

3-6 Aug 1997

Firstpage

810

Abstract

A single circuit architecture to support BPSK, OQPSK, spectrally-efficient FQPSK and spectrally-efficient constant-envelope FQPSK-KF is described. Classical binary phase shift keying (BPSK) and offset quadrature phase shift keying (OQPSK), as well as spectrally-efficient FQPSK (filtered quadrature phase shift keying) constant envelope FQPSK-KF (filtered quadrature phase shift keying-Kato-Feher) are discussed. Waveshaping for increased spectral efficiency using ROM lookup table implementation is explored. A single circuit implementation is described to provide digital baseband modulation for all of the modulation formats discussed

Keywords

mobile communication; phase shift keying; quadrature phase shift keying; table lookup; BPSK; OQPSK; ROM lookup table implementation; digital baseband modulation; filtered quadrature phase shift keying; filtered quadrature phase shift keying-Kato-Feher; modulation formats; multiple wireless applications; offset quadrature phase shift keying; spectral efficiency; spectrally-efficient FQPSK; spectrally-efficient constant-envelope FQPSK-KF; waveshaping; Bandwidth; Baseband; Binary phase shift keying; Circuits; Digital modulation; Fluctuations; Frequency; Phase modulation; Phase shift keying; Quadrature phase shift keying;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1997. Proceedings of the 40th Midwest Symposium on

Conference_Location

Sacramento, CA

Print_ISBN

0-7803-3694-1

Type

conf

DOI

10.1109/MWSCAS.1997.662198

Filename

662198